Problems while using NSBezierPath
Problems while using NSBezierPath
- Subject: Problems while using NSBezierPath
- From: Shrinivasa Kini <email@hidden>
- Date: Fri, 26 Aug 2005 12:44:33 -0700
Hi all,
I am writing a piece of software which requires making some nodes and
links on a screen.
So I am writing a subclass of NSView and creating objects of
NSBezierPath for showing my Nodes and Links (basically line between 2
points).
In the NSView subclass - which I call GraphView - I override the
drawRect:(NSRect)rect method for drawing my objects. The Nodes come up
fine, but the bezierPaths created to show the links are never
displayed in the view. Here is a snippet of my GraphView code-
- (void)drawRect:(NSRect)rect
{
if ( mode == NODEMODE )
{
NSRect r;
NSBezierPath *bp;
r = NSMakeRect(mouseLoc.x-10, mouseLoc.y-10, 20, 20);
bp = [NSBezierPath bezierPathWithOvalInRect:r];
[[NSColor blueColor] set];
[bp fill];
[bezierPathArr addObject:bp];
}
else if ( mode == LINKMODE )
{
NSBezierPath *bl = [[NSBezierPath alloc] init];
[[NSColor blackColor] set];
[NSBezierPath setDefaultLineWidth:5];
[NSBezierPath setDefaultLineJoinStyle:NSRoundLineCapStyle];
NSRect rect1 = [(NSBezierPath*)[bezierPathArr
objectAtIndex:firstSelectedBezierPath] bounds];
NSRect rect2 = [(NSBezierPath*)[bezierPathArr
objectAtIndex:secondSelectedBezierPath] bounds];
[bl moveToPoint:NSMakePoint(rect1.origin.x+30,rect1.origin.y+30)];
[bl lineToPoint:NSMakePoint(rect2.origin.x+30,rect2.origin.y+30)];
}
}
bezierPathArr is an array which stores all the nodes created.
firstSelectedBezierPath and secondSelectedBezierPath are integers
which store the indices of the 2 selected bezierPath nodes between
which the link is being drawn.
I tried creating the link without setting the default parameters, but
it still doesn't work.
Am I missing something?
Any help will be highly appreciated.
Thanks,
Shrini
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